The shelled egg of reptiles prevents the egg from dehydrating
Indicate whether the statement is true or false
TRUE
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One of the more important genera of gram-positive aerobic actinomycetes found in soils is ________.
A. Bdellovibrio B. Pseudomonas C. Streptomyces D. Acinetobacter
Which statement is true?
a. A cell placed in an isotonic solution will swell. b. A cell placed in a hypotonic solution will swell. c. A cell placed in a hypotonic solution will shrink. d. A cell placed in a hypertonic solution will remain the same size. e. A cell placed in a hypertonic solution will swell.
Consider a protein that is targeted to be an integral membrane protein on the surface of a cell. It has a specific functional domain (domain X) facing the external environment of the cell. How will this protein be oriented in the E.R.?
A) It will be embedded in the E.R. membrane with domain X facing the cytoplasm of the cell. B) It will be embedded in the E.R. membrane with domain X facing the lumen of the E.R. C) It will be completely within the E.R. lumen, not embedded in the membrane. D) It will be outside the E.R. as a peripheral membrane protein.
Which of the following is NOT an example of an adhesion factor?
A. Lipoteichoic acid B. Glycocalyx C. Mucin D. Fimbriae E. All of the above are examples of adhesions